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Finding the Fourth Proportional to 115,057.86, 158,781.02 and 67,301.88

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Solution

The fourth proportional to 115,057.86, 158,781.02 and 67,301.88 is: 92,877.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,057.86 : 158,781.02 = 67,301.88 : x
  2. Step 2: Convert to fraction form
    115,057.86/158,781.02 = 67,301.88/x
  3. Step 3: Cross multiply
    115,057.86x = 158,781.02 × 67,301.88
  4. Step 4: Simplify right side
    115,057.86x = 10,686,261,154.32
  5. Step 5: Solve for x
    x = 10,686,261,154.32/115,057.86
  6. Step 6: Final answer
    x = 92,877.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.